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While the currently used way to detect the number of CPU cores ond Windows is nice and straight-forward, GetSystemInfo() only [gives us access to the number of processors within the current group.](https://learn.microsoft.com/en-us/windows/win32/api/sysinfoapi/ns-sysinfoapi-system_info#members) While that is usually fine for systems with a single physical CPU, separate physical sockets are typically separate groups. Switch to using GetLogicalProcessorInformationEx() to handle multi-socket systems better. I've tested this on a physical single-socket x86-64 and a physical dual-socket x86-64 system, and on a virtual single-socket ARM64 system. Physical [multi-socket ARM64 systems seem to exist](https://cloudbase.it/ampere-altra-industry-leading-arm64-server/), but I don't have access to such hardware and the hypervisor I use apparently can't emulate that either.